MEA: Co-op story mode (thoughts?)

Hey everybody,

so this is an idea I've been kicking around ever since the Ryder-twins thingy was established, and now that the game is out, I'm actually a little disappointed Bioware decided against both reading my mind AND succumbing to my every command. Bioware obviously keeps dragging around the imperative of trying new things, and focusing a lot on multiplayer lately, I figured:

Why don't they attempt to actually attempt something unique and make the story campaign availible for two players?


Here's my very simply idea on how it could have been handled in MEA:

• Coop is possible in any "action" zone, i.e. whenever the player is prompted to pick a squad.
  
  
• The passive sibling joins the squad as a "special" additional slot, as soon as the plot allows it.
  
  
• Whenever the player picks their respective sibling to join the squad, that's basically when matchmaking happens. To keep things simple, the other player joins ingame by accessing a console aboard the Tempest, with the exact skillset of their current Ryder and with the appearance/gender of the host's sibling.
  
  
• The sibling would have no say in dialogues, and can only interact with doors and supply boxes. The Nomad would be able to be entered, but not driven by the sibling. Exp is obviously shared, loot could be too complicated. (I wouldn't have minded nothing at all, but maybe a reward box, similar to Strike Team Missions, could be earned at the end of a session.)
  
  
• Either keep it most simple by have them join on call from the Hyperion (i.e. no further changes), or go the extra mile and give them a few interactions on the Tempest (furthermore costly, but I am aware that all of this would have been.)
  

That's pretty much it. I think the vey strict seperation of "talky" and "actiony" bits really makes this rather simple. Besides the obvious effort and resources I would gladly have seen going into this, I have yet to see any fundamental game concepts this would contradict.

Any input?